AIRSTONE

airstone

Noun

  1. A piece of aquarium furniture, traditionally limewood or porous stone, whose purpose is to diffuse oxygen gradually into the tank, eliminating the noise and large bubbles of conventional air filtration systems.


The above text is a snippet from Wiktionary: airstone
and as such is available under the Creative Commons Attribution/Share-Alike License.

Need help with a clue?
Try your search in the crossword dictionary!